Detailed Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 
Q: [header] How to read the periodic table [title] View the periodic table as starting at the top left and ending at the end of the last row, near the bottom right. [step] The table is structured from left to right in order of increasing atomic number. The atomic number is the number of protons in a single atom. <sep> (A) It gets examined upon quantum theory that everything will have a single atomic number. A periodic table consists of several atomic numbers. (B) [substeps] Not every row or column is complete. Although there may be breaks in the center, reading the table will continue from left to right. (C) The periodic table uses this number to calculate the neutrons in a single atom. [substeps] The periodic table has five neutrons, each representing a chemistry element that results in a chemical reaction. (D) To view the periodic table you must first access the periodic table by entering the periodic table's name, the atomic number, and symbol. To do so, just click the ic symbol that displays.
A:
B